Re Royal Australian Nursing Federation v Ex Parte New South Wales Nurses' Association S74 of 1985; Ex Parte Health and Research Employees Association of Australia

The High Court of Australia considered an application for prohibition by the Royal Australian Nursing Federation (RANF) against the New South Wales Nurses' Association (NSWNMA) and the Health and Research Employees Association of Australia (HREAA). The dispute concerned the validity of certain proceedings before the Australian Conciliation and Arbitration Commission (ACAC) concerning the registration of the RANF as an organisation under the *Conciliation and Arbitration Act 1904* (Cth). The NSWNMA and HREAA had sought to intervene in these proceedings, and the ACAC had granted their applications. The RANF sought to prohibit the ACAC from continuing these proceedings on the basis that the interveners lacked standing.

The central legal issue before the High Court was whether the ACAC had erred in law by permitting the NSWNMA and HREAA to intervene in the proceedings for the registration of the RANF. Specifically, the court had to determine the criteria for intervention in such proceedings under the *Conciliation and Arbitration Act 1904* and whether the interveners met those criteria. The RANF contended that the interveners had no direct interest in the registration of the RANF and therefore lacked the necessary standing to intervene.

The High Court held that the ACAC had not erred in law. Brennan, Deane and Dawson JJ reasoned that the ACAC had a broad discretion to permit intervention in proceedings before it, provided that the intervener had a sufficient interest in the matter. Their Honours found that the NSWNMA and HREAA, as registered organisations representing employees in the health and nursing sectors, had a legitimate interest in the registration of another organisation operating in the same field. This interest was sufficient to warrant their intervention, as the registration of the RANF could potentially affect the membership, industrial representation, and operational scope of the existing organisations. The court affirmed that the ACAC's discretion was exercised appropriately, balancing the interests of the parties and the public interest in the proper functioning of industrial relations.